155440151 has 4 divisors (see below), whose sum is σ = 155465112. Its totient is φ = 155415192.

The previous prime is 155440147. The next prime is 155440211. The reversal of 155440151 is 151044551.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 151044551 = 7 ⋅21577793.

It is a cyclic number.

It is not a de Polignac number, because 155440151 - 2² = 155440147 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 155440151.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155445151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5405 + ... + 18441.

It is an arithmetic number, because the mean of its divisors is an integer number (38866278).

Almost surely, 2^155440151 is an apocalyptic number.

155440151 is a deficient number, since it is larger than the sum of its proper divisors (24961).

155440151 is a wasteful number, since it uses less digits than its factorization.

155440151 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24960.

The product of its (nonzero) digits is 2000, while the sum is 26.

The square root of 155440151 is about 12467.5639561223. The cubic root of 155440151 is about 537.6765179031.

The spelling of 155440151 in words is "one hundred fifty-five million, four hundred forty thousand, one hundred fifty-one".